e) Prior to pickling, all heavy deposits of oils, greases, soils or foreign matter other than millscale, rust or rustscale shall be removed by precleaning as cited in 5.1.
酸洗前，除了铁鳞、铁锈之外，诸如油、油脂、土或杂质等所有的重沉淀物均应通
预清洗来清除，如5.1中所述。
e) Prior to pickling, all heavy deposits of oils, greases, soils or foreign matter other than millscale, rust or rustscale shall be removed by precleaning as cited in 5.1.
酸洗前，除了铁鳞、铁锈之外，诸如油、油脂、土或杂质等所有的重沉淀物均应通预清洗来清除，如5.1中所述。
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